Patent US7799A successfully refreshed from Google Patents.
US7799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved method of securing rails of railroads
Assignee: —
•
Filing: —
•
Granted: 1850-11-26
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Expires: 1867-11-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:27
CPC Classifications
E; E01; E01B; E01B3/00; E01B3/16; E01B3/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1853-11-25 | 1854-05-27 | 1854-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1857-11-25 | 1858-05-27 | 1858-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1861-11-25 | 1862-05-27 | 1862-11-26 | $7700.00 | Window Closed / Lapsed |